Coventry City manager Andy Thorn has blamed Marlon King and his advisor for the strikers decision to sign for Birmingham City.
Thorn had, according to Coventry City’s versions of events, had the agreement from King that he would sign.
Thorn told the club website: "I am staggered and dismayed at what has happened. I could not have been happier for everyone at the club when Marlon rang me to tell me of this decision, but that did not last long.
"Footballers, of course, have to consider their careers but perhaps Marlon should have considered just what Coventry City and our supporters have done for him.
"I feel betrayed on a personal and professional level by what has happened. I have no idea what sort of advice he has been given but I think he should have considered how well he has done here, the way the supporters have backed him and accepted him.
"Clearly that meant very little and that is a real shame. It reflects very badly on him and his advisor.
"But life goes on, and we are continuing with our plans to build a squad and a team capable of performing well in the Championship and producing the brand of football we know our supporters appreciate."